How do you remove the yhermostat on mondeo mk3 petrol?

To remove the thermostat on a Ford Mondeo MK3 petrol, first, ensure the engine is cool. Disconnect the negative battery terminal, then drain the coolant from the radiator. Remove the hoses connected to the thermostat housing, unbolt the housing, and take out the old thermostat. Clean the gasket surfaces before installing the new thermostat and reassemble in reverse order.